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Mimicry encryption method and system based on vector network codes and DES (data encryption standard)

A network coding and encryption method technology, applied in the field of mimic encryption methods and systems based on vector network coding and DES, can solve the problems of long time-consuming, high overhead, and poor VNC defense capability of triple DES encryption, and achieves improved mimic security features, The effect of improving the ability to resist attacks and low system overhead

Active Publication Date: 2015-09-30
浙江倚宿网络技术有限公司
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a mimetic encryption method and system based on vector network coding and DES, so as to solve the problems of triple DES encryption in the prior art, such as long time-consuming, high overhead and poor VNC prevention capability

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  • Mimicry encryption method and system based on vector network codes and DES (data encryption standard)
  • Mimicry encryption method and system based on vector network codes and DES (data encryption standard)
  • Mimicry encryption method and system based on vector network codes and DES (data encryption standard)

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Embodiment 1

[0066] see figure 1 As shown, the mimetic encryption method based on vector network coding and DES provided by the embodiment of the present invention includes:

[0067] S1, large matrix VNC encryption: use VNC to encode the plaintext x to generate an intermediate sequence z 1 ;

[0068] S2, DES encryption: use DES to encrypt the intermediate sequence z 1 Encrypt and generate an intermediate sequence z 2 ;

[0069] S3, small matrix VNC encryption: use VNC to encrypt the intermediate sequence z 2 Encode and generate ciphertext y;

[0070] S4, dynamic update of the key: dynamically update the ciphertext y to generate a new ciphertext y' and a key.

[0071] In the mimetic encryption method based on vector network coding and DES described in the embodiment of the present invention, the plaintext x is encoded by a large matrix VNC encryption method to generate an intermediate sequence z 1 , improve the ability of the present invention to resist brute force attacks; then use ...

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Abstract

The invention provides a mimicry encryption method and system based on vector network codes and DES (data encryption standard), which is conducive to improving system protection capability and reduce system expense. The mimicry encryption method includes S1, encrypting a large matrix VNC, encoding plaintexts by VNC, and generating an intermediate sequence z1; S2, encrypting DES, to be specifically, encrypting the intermediate sequence z1 by means of DES and generating an intermediate sequence z2; S3, encrypting a small matrix VNC, to be specially, encoding the intermediate sequence z2 by means of VNC and generating ciphertext y; S4, dynamically updating secret keys, to be specifically, dynamically updating the ciphertext y to generate new ciphertext y' and secret keys. The system comprises a large matrix VNC encrypting unit, a DES encrypting unit, a small matrix VNC encrypting unit and a secret key dynamic-updating unit. The mimicry encryption method and system is applicable to the technical field of encryption.

Description

technical field [0001] The invention relates to the technical field of encryption, in particular to a mimetic encryption method and system based on vector network coding and DES. Background technique [0002] In recent years, with the rapid development of computers and the continuous decline of hardware overhead, brute force attacks have become more and more effective for cracking the classic Data Encryption Standard (DES) in iterative block ciphers. The attack still has a very good incomputability. Among the existing DES encryption variants, the double DES encryption is very fragile in the face of man-in-the-middle attacks, and basically cannot achieve the purpose of multiple encryption to increase the computational complexity; the triple DES encryption is in the face of Increase the key length to 112 bits for man-in-the-middle attacks. At present, this encryption method is safe and widely used, but its disadvantage is that it takes a long time and costs a lot. [0003] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/06
Inventor 唐汉琦孙奇福阳小龙隆克平
Owner 浙江倚宿网络技术有限公司
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